Home / 5,693.12-7,856.40-3,209.12

Finding the Fourth Proportional to 5,693.12, 7,856.40 and 3,209.12

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Solution

The fourth proportional to 5,693.12, 7,856.40 and 3,209.12 is: 4,428.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,693.12 : 7,856.40 = 3,209.12 : x
  2. Step 2: Convert to fraction form
    5,693.12/7,856.40 = 3,209.12/x
  3. Step 3: Cross multiply
    5,693.12x = 7,856.40 × 3,209.12
  4. Step 4: Simplify right side
    5,693.12x = 25,212,130.37
  5. Step 5: Solve for x
    x = 25,212,130.37/5,693.12
  6. Step 6: Final answer
    x = 4,428.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.